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2
Connect the center hose of the charging set to a vacuum pump.
3
Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from
0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa). Then evacuate the air approximately ten minutes.
4
Close the Low side valve of the charging set and turn off the vacuum pump. Make sure that the needle in the
gauge does not move after approximately five minutes.
Note : BE SURE TO TAKE THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKAGE.
5
Disconnect the charging hose from the vacuum pump and from the service port of the 3-way valve.
6
Tighten the service port caps of the 3-way valve at a torque of 18 N•m with a torque wrench.
7
Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to "OPEN"
using a hexagonal wrench (4 mm).
8
Mount valve caps onto the 2-way valve and the 3-way valve.
Be sure to check for gas leakage.
o
If gauge needle does not move from 0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa), in step 3 above take the
following measure:
-
If the leak stops when the piping connections are tightened further, continue working from step 3.
-
If the leak does not stop when the connections are retightened, repair location of leak.
-
Do not release refrigerant during piping work for installation and reinstallation.
-
Take care of the liquid refrigerant, it may cause frostbite.
11.2.5
Connect the Cable to the Outdoor Unit
1
Remove the control board cover from the unit by loosening the screw.
2
Cable connection to the power supply through Isolating Devices (Disconnecting means).
Connect approved type polychloroprene sheathed power supply cord 3 x 1.5 mm
o
2
2.5 mm
(2.0HP) type designation 60245 IEC 57 or heavier cord to the terminal board, and connect the
others end of the cord to Isolating Devices (Disconnecting means).
3
Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 x
2
1.5 mm
flexible cord, type designation 60245 IEC 57 or heavier cord. Allowable connection cable length of
each indoor unit shall be 30 m or less.
4
Connection cable between outdoor unit and DRED (Demand response enabling devices) shall be double
insulation layer, polychloroprene sheathed (>50V) with size 4 x (0.5 mm
where the maximum allowable length is 30 m.
5
Connect the power supply cord and connection cable between indoor unit and outdoor unit according to the
diagram below.
6
Secure the power supply cord and connection cable onto the control board with the holder.
7
Attach the control board cover back to the original position with screw.
8
For wire stripping and connection requirement, refer to instruction 11.1.6 of indoor unit.
2
37
2
(1.5HP) or 3 x
2
to 2.0 mm
) cable or flexible cord,
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